The fault block mountains shift
Operant-conditioning is the process by which a response becomes more likely to occur or less so, depending on its consequences. Shaping is an operant-conditioning procedure in which successive approximations of a desired response are reinforced. shaping spontaneous recovery stimulus generalization stimulus discrimination . This process of establishing a behavior was first developed and used by B.F Skinner,
The answer is "<span>C. Thomas Edison".
</span>Thomas Edison was the one who opened a laboratory in Menlo Park, NJ, in 1876. This site later become known as an "invention factory," since Edison and his representatives took a shot at a few unique developments at any given time there. It was there that Thomas Edison created the phonograph, his first industrially effective innovation.
Explanation:
1. Rivers have a positive impact on trade, because rivers make it easier to get in and out of where you need to go.
2. People would rather live by rivers for a clean water source, and to trade more easily.
3. People avoid deserts, due to the fact that there is almost no hydration, and no trade routes.
